1191420694799 has 4 divisors (see below), whose sum is σ = 1191449477736. Its totient is φ = 1191391911864.

The previous prime is 1191420694769. The next prime is 1191420694819. The reversal of 1191420694799 is 9974960241911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1191420694799 - 2⁸ = 1191420694543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1191420694759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14329289 + ... + 14412194.

It is an arithmetic number, because the mean of its divisors is an integer number (297862369434).

Almost surely, 2^{1191420694799} is an apocalyptic number.

1191420694799 is a deficient number, since it is larger than the sum of its proper divisors (28782937).

1191420694799 is an equidigital number, since it uses as much as digits as its factorization.

1191420694799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28782936.

The product of its (nonzero) digits is 8817984, while the sum is 62.

The spelling of 1191420694799 in words is "one trillion, one hundred ninety-one billion, four hundred twenty million, six hundred ninety-four thousand, seven hundred ninety-nine".